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Steve I Hsu: High spectral purity digital waveform synthesizer. Hughes Aircraft Company, Leonard A Alkov, W K Denson Low, February 27, 1996: US05495202 (99 worldwide citation)

A digital waveform synthesizer, using a direct digital synthesizer and a digital frequency divider. The direct digital synthesizer provides a digitally synthesized input frequency signal. An upconverter and frequency divider circuit upconverts and divides the synthesized input frequency signal to pr ...


2
Hsu Steve I: High spectral purity digital waveform synthesizer.. Hughes Aircraft Co, January 4, 1995: EP0632574-A1 (3 worldwide citation)

A digital waveform synthesizer (10) comprises a direct digital synthesizer (12) for providing a digitally synthesized input frequency signal. Further provided is a reference frequency generator (25) for providing clock and predetermined frequency reference signals. An upconverter and divider circuit ...